An Idol Defiled - Sell It With Your Body! -

From R18:
Reina is an unpopular idol who's working hard to become #1! But in order to do that, she has to hit the casting couch day after day! Then, she makes friends with a writer for a popular idol show, who comes up with a new idea -- an idol delivery service! Reina gets popular on her new show, where she's always using her body to get ahead, until she gets delivered to a porn director's house?! Suddenly, Reina's assaulted by a hell of pleasure! You won't be able to take your eyes off this crazy story until the end!